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암모니아 및 유속분포가 대형 디젤 엔진에 장착된 요소분사 SCR촉매의 deNOx 성능에 미치는 영향

Title
암모니아 및 유속분포가 대형 디젤 엔진에 장착된 요소분사 SCR촉매의 deNOx 성능에 미치는 영향
Other Titles
The Effect of Ammonia and Flow Distribution on deNOx Performance of urea-SCR catalyst in a Heavy duty diesel engine
Author
김우승
Keywords
Urea-SCR(요소 SCR); Diesel Engine(디젤 엔진); Urea-water-solution(요소 수용액); Thermal decomposition(열해리); Injection(분무); Computational Fluid Dynamics(CFD: 전산유체역학)
Issue Date
2007-05
Publisher
한국자동차공학회
Citation
한국자동차공학회 2007년 춘계학술대회 논문집, v. 1, Page. 229 - 235
Abstract
Urea-SCR, the selective catalytic reduction using urea as reducing agent, has been investigated for about 10 years in detail and today is a well established technique for DeNOx of stationary diesel engines. In the case of the SCR-catalyst a non-uniform velocity and NH₃ profile will cause an inhomogeneous conversion of the reducing agent ammonia, resulting in a local breakthrough of ammonia or increasing NOx emissions. Therefore, this work investigates the effect of flow and NH₃ non-uniformities on the DeNOx performance and NH₃ slip in a Urea-SCR exhaust system. From the results of this study, it is found that flow and ammonia distribution within SCR monolith is strongly related with DeNOx performance of SCR catalyst. It is also found that multi-hole injector shows better ammonia uniformity at the face of SCR monolith face than one hole injector.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00849259&language=ko_KRhttp://repository.hanyang.ac.kr/handle/20.500.11754/106469
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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